211166253 has 12 divisors (see below), whose sum is σ = 311508288. Its totient is φ = 137781960.

The previous prime is 211166233. The next prime is 211166261. The reversal of 211166253 is 352661112.

211166253 is a `hidden beast` number, since 21 + 1 + 16 + 625 + 3 = 666.

It is not a de Polignac number, because 211166253 - 2⁹ = 211165741 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211166213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249183 + ... + 250028.

It is an arithmetic number, because the mean of its divisors is an integer number (25959024).

Almost surely, 2^211166253 is an apocalyptic number.

It is an amenable number.

211166253 is a deficient number, since it is larger than the sum of its proper divisors (100342035).

211166253 is a wasteful number, since it uses less digits than its factorization.

211166253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499264 (or 499261 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 211166253 is about 14531.5605837776. The cubic root of 211166253 is about 595.4905006024.

It can be divided in two parts, 211 and 166253, that added together give a square (166464 = 408²).

The spelling of 211166253 in words is "two hundred eleven million, one hundred sixty-six thousand, two hundred fifty-three".